how to attach an output of a java program to the email

Thaks for ur reply iam using a HMAC _MD5 algorthim for generating key.i need to attach the key generated with my mail message so i attch my codeing with this mail u pls help me with this issuse.

import javax.mail.*;

import javax.mail.internet.*;

import java.util.*;

import java.io.*;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.Serializable;

import java.io.UnsupportedEncodingException;

import java.security.InvalidKeyException;

import java.security.NoSuchAlgorithmException;

import java.security.Security;

import com.sun.net.ssl.*;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.crypto.KeyGenerator;

import javax.crypto.Mac;

import javax.crypto.SecretKey;

public class Jmail extends Eval{

private static final String SMTP_HOST_NAME = "smtp.mail.yahoo.com";

private String SMTP_AUTH_USER = "xxax";

private String SMTP_AUTH_PWD = "sdsa";

//private static final String emailMsgTxt= "Online Order Confirmation Message. Also include the Tracking Number.";

private static final String emailSubjectTxt = "Order Confirmation Subject";

private static final String emailFromAddress = "xxxxxx@yahoo.com";

private static String emailMsgTxt = "Dear ABC"

+" Thank you for your interest for our product.Your evaluation key is"

+" Feel free to communicate us if you encounter any problem in evalation. "

+ "Your successfull evaluation is important to us."

+"Sincerely xxxxx"

+" Click the link to start using product ";

private static final String[] emailList = { "xxxxx@yahoo.co.in","fxxx@yahoo.com"};

public static void main(String args[]) throws Exception

{

Jmail smtpMailSender = new Jmail();

Jmail dd=new Jmail();

smtpMailSender.postMail( emailList, emailSubjectTxt, emailMsgTxt, emailFromAddress);

System.out.println("Sucessfully Sent mail to All Users");

dd.keygenerator();

}

public void postMail( String recipients[ ], String subject,

String message , String from) throws MessagingException, InvalidKeyException, NoSuchAlgorithmException, FileNotFoundException, IOException

{

boolean debug = true;

Properties props = new Properties();

props.put("mail.smtp.host", SMTP_HOST_NAME);

props.put("mail.smtp.auth", "true");

props.put("mail.smtp.port", "25");

props.put("mail.smtp.protocol","smtp");

props.put("mail.debug", "true");

Authenticator auth = new SMTPAuthenticator();

Session session = Session.getDefaultInstance(props, auth);

session.setDebug(debug);

// create a message

Message msg = new MimeMessage(session);

// set the from and to address

InternetAddress addressFrom = new InternetAddress(from);

msg.setFrom(addressFrom);

InternetAddress[] addressTo = new InternetAddress[recipients.length];

for (int i = 0; i < recipients.length; i++)

{

addressTo = new InternetAddress(recipients);

}

msg.setRecipients(Message.RecipientType.TO, addressTo);

// Setting the Subject and Content Type

msg.setSubject(subject);

msg.setContent(message,"text/plain");

Transport.send(msg);

//Eval key

Eval dd=new Eval();

dd.keygenerator();

}

private class SMTPAuthenticator extends javax.mail.Authenticator

{

public PasswordAuthentication getPasswordAuthentication()

{

String username = SMTP_AUTH_USER;

String password = SMTP_AUTH_PWD;

return new PasswordAuthentication(username, password);

}

}

public void keygenerator() throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException {

String inputString ="0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b";

KeyGenerator keyGen = KeyGenerator.getInstance("HMACMD5");

SecretKey secretKey = keyGen.generateKey();

Mac mac = Mac.getInstance(secretKey.getAlgorithm());

mac.init(secretKey);

byte[] byteData = inputString.getBytes("UTF8");

byte[] macBytes = mac.doFinal(byteData);

String macAsString = new sun.misc.BASE64Encoder().encode(macBytes);

system.out.println("Athentication key is "+macAsString);

}

catch(Exception e)

{

System.err.println("error writing");

}

}

}

erikaa at 2007-7-7 22:15:53 >